Pipe-wrench.



R. W. THAYER.

PIPE WRENCH,

APPLICATION FILED JAN. 12. 1915.

Patented Aug. 17, 1915..

P a n Q. N

- siding at 'Rosco'ri WALTER llIfIKYE R, or wit-newsma MoiTErAiv'A.

Specification of Letters i at nt.

hpplication filed January 12, 1915. Serial No. 1,886.

Gallatin,

useful Improvements in certain new and Pipe-Wrenches; and I following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make anduse the same.

This invention relates to improvements in pipe wrenches.

An object of the invention resides in the provision of a simple, durable and inexpensive wrench of the above type, in which novel means are embodied whereby the jaws thereof may be conveniently adjusted with relation to each other to accommodate pipes of greater or less diameter.

With the above and other objects of similar nature in view, theinvention consists in the construction, combination and arrangemcnt of parts, set forth in and fall- I ing within the scopeof the appended claim.

view thereof. Fig. 3 is a view similarto Fig. .1 with parts thereofbroken away, and

Fig. 4t is a similar view taken on the line l4 of Fig. 1.

Referring now more particularly to the.

drawing, the wrench comprises a handle 10 having formed at one end thereof a stationary jaw 11, the gripping surface of the lat- "ter being curved and serrated as at 12, as

is usual in tools of this nature.

' Arranged at opposite sides of the jaw 10 and pivoted as at 13 to swing longitudinally thereof, are a pair of elongated links 14:, the free ends of which project beyond the gripping face 12 of the jaw and are rigidly connected together by means of a transverse pin 15.

Slidably mounted between the links 1 1 and adjustable with respect to the stationary jaw 11, is a movable jaw 16, the gripping face of which is likewise curved and serrated as at 17 to cooperate with the stationary jaw in engaging and clamping the object to be turned.

Formed transversely through the shank 18 of the movable jaw and adjustably receiving the pin 15 of the links 1 1 is a longitudinal slot 19, said slot being provided do hereby declare the,

In the drawing :Figure 1 is a front elerespect to the jaw 11.

side thereof adjacentthe stationary jaw, with a plurality of downwardly inclined transverse notches 20, in which said pin is adapted to be interchangeably engaged whereby to secure the jaw in its various adjusted positions.

To prevent lateral displacement of the shank 18 with respect to the handle 10, there are secured to and extended similarly from opposite sides of the latter a pair of spaced keeper plates 21, which closely embrace the shank and have connecting their free ends a transverse pin 22, said pin being designed to engage the outer edge of the shank and limit movement thereof away from the handle.

Disposed in the handle 10 beneath each of these plates 21 and opening toward the shank 18 is a groove or pocket 28 in'which is seated a helical spring 24:, the outer ends of said springs engaging the adjacent edge of the shank to urge the same outwardly upon the pin 15 as a pivot, and yieldably retain the jaw 16 in gripping relation with the jaw 11.

7 It will be noted that the plates 21 are also i 2 provided with grooves or pockets 25, formed by pressing the metal outwardly as'is read- 11y apparent, these grooves registering with those in'the handle 10 and coacting therewith to suitably house'the springs 2 L It the plates extend to a point beyond the adj acent edge of the shank 18 and thus serve to prevent lateral displacement of the springs when the jaw 16 is adjusted with Having thus fully described the inven 'tion, to adjust the jaws 11 and 16 to accommodate pipes of different sizes, pressure is exerted upon the free end of the shank 18, and against the action of the springs 24-, to disengage the pin 15 from the related notch 20. The jaw 16 is then moved as desired either toward or away from the jaw 11 with the shank 18 sliding freely between thesprings 24: and pin 22, the pin 15 riding along the slot 19, and again engaging in one of the notches 20 when pressure upon the shank is removed.

What is claimed, is

A pipe wrench comprising a handle, a jaw at one end of the handle, a second jaw adjustable toward and away from the first named jaw and provided with a shank having a longitudinal slot and notches formed will further be noted that the grooves 25 in in one wall of slot, links having their tioned in the slot for interchangeable en gagement in said notches, and meansfor yieldably holding said pin in engagement with the notches to retain said second named jaw in adjusted position. 10

In testimony whereof, I aflixi my signature, in the presence of two witnesses.

ROSCOE WALTER THAYER. Witnesses;

JOHN J. CALLAGHAN9 EDWARD WALBERT.

copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

